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Sulphiric(sp?) acid to etch pcbs? Answered

I am just wondering wether it is possible to etch pcbs with sulfiric acid because I heard it can dissolve copper. But i'm wondering if it will just dissolve the copper or if the entire pcb will melt.
~josh1324

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steveastroukBest Answer (author)2011-06-03

Don't bother, use cupric chloride instead We've switched over to it at work, and its great. Steve

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iceng (author)steveastrouk2011-06-03

I use it too,  and  No Nasty Acid Smell  or holy spots.
Easy to buy too.     A

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steveastrouk (author)iceng2011-06-04

There ARE peroxy-sulphuric etches, but they are really for pro-users only, the chemistry can go exo-thermic, and the fumes are nasty.

That said, copper precipitates out of the solution.

Steve

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lemonie (author)iceng2011-06-04

No holy spots?
Is it possible to consecrate PCBs with sulphuric acid?

L

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iceng (author)lemonie2011-06-04

Awa Tagu Siam,   Awa Tagu Siam ,  must be chanted all the while
consecration is occuring ..    A

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oldmanbeefjerky (author)2011-06-04

sulfuric acid will not eat through copper metal, only oxides.
if you add peroxide to the acid, it will eat through copper metal.

does that answer your question?

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user

Does anyone find that the sulfuric acid eats through the PCB material also?

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